Sam's been busy!

Sam has been making a game that models virus reproduction and control on Scratch. Apparently you earn money from killing the 'virus dots'. If you leave any virus dots they multiply and spread. The more dots there are, the faster they multiply. When there are fewer dots it is much easier to get on top of them as once there are too many, they spread faster than you can kill them. I can't think where he gets his inspiration from!